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Chapter 6: Troubleshooting ❖ 6-25
Table 6.3 Diagnostic LED flash sequences
Flash Sequence Description/Corrective Action
1 flash — 1 second — 1 flash…etc. System controller CPU fault.
ACTION: Contact your dealer or Digital.
2 flashes — 1 second — 2 flashes…etc. Base RAM fault.
ACTION: Contact your dealer or Digital.
3 flashes — 1 second — 3 flashes…etc. ROM fault.
ACTION: Remove the PostScript SIMM, if installed,
and test the printer again. If the problem
is resolved, replace the PostScript SIMM. If
the problem is not resolved, contact your
dealer or Digital.
4 flashes — 1 second — 4 flashes…etc. System controller to print engine fault.
ACTION: Make sure the controller board is firmly
seated. If the problem is not resolved,
contact your dealer or Digital.
5 flashes — 1 second — 5 flashes…etc. Resolution enhancement self-test fault.
ACTION: Contact your dealer or Digital.
6 flashes — 1 second — 6 flashes…etc. Communications ports internal loopback test fault.
ACTION: Contact your dealer or Digital.
7 flashes — 1 second — 7 flashes…etc. Slot SIM2 fault.
ACTION: Perform the corrective actions listed under
0100 in Table 6.2 on page 6-6.
8 flashes — 1 second — 8 flashes…etc. Slot SIM3 fault.
ACTION: Perform the corrective actions listed under
0101 in Table 6.2 on page 6-6.
kug-ch06 Page 25 Thursday, March 6, 1997 4:48 PM